EV HV Button !!

I think I'd remove the EV/HV button and test it. Sounds like it's just a bad button. From your last post, it seems to press itself and refuse to recognize presses at other times and not in any consistent pattern.

 

That's why I bought a Prime; come on folks, it's only money, har, har!! The Prime can be driven up to 84 mph while it usually will remain in the default EV mode, a VAST improvement over my 2012 PIP. Also, I average 32 or so miles of range vs. 9 miles with my PIP here in Socal. Of course, right now I'm a Monster ICE polluter driving that Sentra Turd Rental while my baby gets repaired at the body shop.

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AChoiredTaste.com

 

I have to salute your courage in purchasing such a technologically complicated (and USED!) JDM version PIP Prius in Pakistan. Our best cars in Algeria were very early (simpler) Citroens and Jeeps! And I'm SURE you must have 5 or 6 excellent Toyota dealers in your city, har, har. It would be really interesting to see how many Prii are in your area; a car club is pretty helpful in getting assistance with "interesting" cars like Prii. Our Alfa Club sure helped me out when I owned those cars. Good luck! Can you contact previous owner?

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AChoiredTaste.com

 

After reading through this entire thread twice, I get the impression you aren't aware of the required warm-up cycle. Once you push that HV/EV button, it will force the engine to start and will continue running until coolant reaches the necessary temperature for emission cleansing. If there is something wrong with your coolant (low, dirty, clogged) or your thermostat (unable to shut), you may not be able to get back into EV mode.

 

Just to be clear, regardless of what's on the screen (the dot matrix VFD), there should be a green "EV Mode" light above the speedometer, just like the Eco/Pwr lights, when you engage EV Mode.

Regen stops at 10 km/h and below. I suspect the problem could be a bad connection somewhere, but there could be something about EMI conditions within the car that allow it to function at lower speeds.

 

i read you are over seas and have a JDM PIP with 100,000 k on the odometer.
I doubt the JDM would be programmed that much differently than a US model, but only the owners manual or shop manual
could confirm if that behavior is normal for your model.
I suspect one of two things, for what it's worth to you from me sitting here thinking.
One, a malfunction somewhere.
Two, the car got used to being driven one way for 100,000 k and refuses to change it's behavior right away.
If it were my PIP I'd try driving it one or two 50k trips in POWER one or two trips in ECO and one or two trips in NORMAL without
touching the HV/EV button.
I'd also check the Owners Manual for the JDM description of the EV/HV button.
If neither reading the manual or running the PIP in the different modes of 50k helps at all,
I'd look into getting a JDM shop manual.

 

The owner's manual will be in Japanese

 

Did you try a hard reset, disconnect the battery, then revisit your driving experiences?

 

is it worth saying that someone is going to have to do the translation to be able to fix the issue(s) properly?

it must be fun seeing all those messages in jpn.

 

@hieronymous has already confirmed the expected behaviour of a JDM Prius PHV is no different from other markets, we don't need to translate the manual. It sounds like something is faulty to me, possibly just a bad connection with the EV/HV button.

 

Either that or the button itself.

 

Yes. I was wondering is it possible to swap the connection with one of the other buttons? I'm not sure if it's just one large block connector for the three buttons there, but it is easy to get access to that area.

 

sounds like a simple fix

 

The schedule calls for 10,000 miles or (iirc) one year, whichever is first. That's using synthetic, which is pretty much the only way to get the specified 0W-20 oil. Theoretically, you could stretch the miles based on your percentage of EV miles. Still, my schedule with the PiP was 7,500 miles. I have always changed sooner than spec and never had an oil burner.